Followup question, why does this backup copy job say CBT enabled?? I ticked the option "Read the entire restore point from source backup" not sure if this makes a difference in my question. Also interesting to see that it mentions "Network" and "Proxy". Why would those calculations even show up copying from repo to USB directly ?
Also for those interested the speed you're seeing is to USB 3.0. This is Western Digitals DUO 16 TB loaded with their 'RED' drives in RAID 0